Standard/regional:

oddish -> gloom -> vileplume: bellsprout -> weepinbell -> victreebel: chikorita -> bayleef -> meganium: hoppip -> skiploom -> jumpluff: seedot (regional) -> nuzleaf (regional) -> shiftry (regional): chespin -> quilladin -> chesnaught: sprigatito -> floragato -> meowscarada: smoliv -> dolliv -> arboliva: treecko -> grovyle -> sceptile: sewaddle -> swadloon -> leavanny: bulbasaur -> ivysaur -> venusaur: lotad (regional) -> lombre (regional) -> ludicolo (regional): turtwig -> grotle -> torterra: burmy_plant (regional) -> wormadam_plant (regional): budew -> roselia -> roserade: snover (regional) -> abomasnow (regional): bounsweet -> steenee -> tsareena: grookey -> thwackey -> rillaboom:

Add picks:

Uncommon: hisui_voltorb (regional) -> hisui_electrode (regional): tangela -> tangrowth: shroomish -> breloom: cottonee -> whimsicott: petilil -> liligant -> hisuian_lilligant (regional): capsakid -> scovillain:

Rare: paras -> parasect: sunkern -> sunflora: cacnea -> cacturne: lileep -> cradily: deerling_spring -> sawsbuck_spring: deerling_summer -> sawsbuck_summer: deerling_autumn -> sawsbuck_autumn: deerling_winter -> sawsbuck_winter: phantump -> trevenant:

Epic: ferroseed -> ferrothorn: skiddo -> gogoat: pumpkaboo -> gourgeist:

Hatches: snivy: rowlet:

Uniques:

tropius:

carnivine:

rotom_mow:

maractus:

dhelmise:

tapu_bulu (regional):

applin -> flapple -> appletun -> dipplin -> hydrapple:

Legendaries:

celebi:

shaymin:

virizion:

celesteela:

kartana:

ogerpon_teal (regional):

ogerpon_wellspring (regional):

ogerpon_hearthflame (regional):

ogerpon_cornerstone (regional):

ogerpon_teal_mask (regional):

ogerpon_wellspring_mask (regional):

ogerpon_hearthflame_mask (regional):

ogerpon_cornerstone_mask (regional):